1. Satellite Operation Department, China Siwei Surveying and Mapping Technology Co.Ltd, Beijing, China
2. The Third Insititute of China Aerospace Science and Industry Corporation (CASIC), Hiwing Satellite Operation Division, Beijing, China
3. College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing, China
4. School of Surving and Geo-Informatics, Shandong Jianzhu University, Jinan, China
5. Youth League Committee, North China University of Science and Technology, Tangshan, Hebei, China